WB,
I have had a Calcutta 200 since early 2000 and have had Fireline on it since I bought it. The only issues I've ever had with the combination is having braid that was too light (thin). Originally had 4lb fireline on it and was casting small hardbody lures and had trouble casting when there was any wind around. The lure was also too light.
I've progressively stepped up the thickness of the Fireline over the years and now find myself using 20lb Fireline, though I tend to use 12lb or 8lb flurocarbon leader (about 2 meters long). I guess I'm not flicking light/small lures these days with this outfit. I tend to use the baitcaster these days for casting heavier lures/SP's and trolling. Any light luring I use my 6' 6" spinning outfit (4lb Fireline + 8lb flurocarbon leader).
There are lots of braid brands out there. I have used some of Harro's Bionic Braid, which is a little smoother than Fireline. Platapus also do a good one too. I think it's "try and see" deal really. Everyone will have their own favourite.
Cheers,
Gigantor